Cov khoom
SDV valve (Kaw Lub Valve)
✧ Kev piav qhia
Lub SDV valve (Shut Down Valve) yog lub valve uas muaj qhov qhib zoo li V rau ntawm ib sab ntawm lub spool ib nrab. Los ntawm kev kho qhov qhib ntawm lub spool, thaj chaw hla ntawm qhov nruab nrab ntws raug hloov pauv kom kho qhov ntws. Nws kuj tseem siv tau rau kev tswj hwm qhov qhib lossis kaw ntawm cov kav dej. Nws muaj cov nyhuv ntxuav nws tus kheej, tuaj yeem ua tiav qhov kev hloov pauv me me hauv qhov qhib me me, qhov piv hloov pauv tau loj, haum rau cov fiber, cov khoom me me, cov khoom siv slurry.
Qhov qhib thiab kaw ntawm lub pob V-hom yog lub pob kheej kheej nrog lub voj voog, thiab ob lub hemispheres txuas nrog lub ntsia hlau thiab tig 90 ° kom ua tiav lub hom phiaj ntawm kev qhib thiab kaw.
Nws yog dav siv nyob rau hauv lub kaw lus tswj tsis siv neeg ntawm roj av, kev lag luam tshuaj lom neeg thiab lwm yam.
✧ Cov Kev Ntsuas ntawm Cov Pob Welded Tag Nrho Sab Nkag Mus
| Khoom | SDV valve (Shut Down Valve) (V chaw nres nkoj) |
| Lub npe txoj kab uas hla | NPS 2", 3", 4", 6", 8", 10", 12", 14", 16", 20" |
| Lub npe txoj kab uas hla | Chav Kawm 150, 300, 600, 900, 1500, 2500. |
| Xaus Kev Sib Txuas | Flanged (RF, RTJ), BW, PE |
| Kev Ua Haujlwm | Qev, Cov iav cab, Qia liab qab, Pneumatic Actuator, Fais Actuator |
| Cov ntaub ntawv | Casting: A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, Inconel, Hastelloy, Monel |
| Qauv | Tag Nrho Los Yog Txo Qhov Bore, RF, RTJ, BW los yog PE, Sab nkag, sab nkag, lossis lub cev tsim qauv vuam Ob Chav Thaiv & Ntshav (DBB), Ob Chav Rho Tawm & Ntshav (DIB) Lub rooj zaum thaum muaj xwm ceev thiab koob txhaj tshuaj Cov Khoom Siv Tiv Thaiv Static |
| Tsim thiab Chaw Tsim Khoom | API 6D, API 608, ISO 17292 |
| Ntsej muag rau ntsej muag | API 6D, ASME B16.10 |
| Xaus Kev Sib Txuas | BW (ASME B16.25) |
| MSS SP-44 | |
| RF, RTJ (ASME B16.5, ASME B16.47) | |
| Kev Ntsuas thiab Kev Tshuaj Xyuas | API 6D, API 598 |
| Lwm yam | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Kuj muaj nyob rau ib | PT, UT, RT, MT. |
| Tsim kom muaj kev nyab xeeb hluav taws | API 6FA, API 607 |
✧ Cov yam ntxwv ntawm SDV valve (Shut Down Valve) (V port)
1. Qhov tsis kam ntawm cov kua dej yog me me, qhov coefficient ntawm kev ntws yog loj, qhov piv hloov kho tau siab. Nws tuaj yeem ncav cuag: 100: 1, uas yog loj dua qhov piv hloov kho tau ntawm lub qhov rooj ncaj nraim ib lub rooj zaum tswj hwm, ob lub rooj zaum tswj hwm thiab lub tes tsho tswj hwm lub qhov rooj. Nws cov yam ntxwv ntws yog kwv yees li sib npaug zos feem pua.
2. kev sib khi zoo. Qib xau ntawm cov qauv hlau tawv sib khi yog Chav Kawm IV ntawm GB/T4213 "Pneumatic Control Valve". Qib xau ntawm cov qauv mos sib khi yog Chav Kawm V lossis Chav Kawm VI ntawm GB/T4213. Rau cov qauv sib khi tawv, qhov chaw sib khi ntawm lub pob core tuaj yeem ua los ntawm cov plating chromium nyuaj, ua los ntawm cobalt raws li cemented carbide, txau tungsten carbide hnav-resistant txheej, thiab lwm yam, los txhim kho lub neej kev pabcuam ntawm lub valve core seal.
3. qhib thiab kaw sai sai. V-hom pob valve yog lub valve stroke angular, los ntawm qhib tag nrho mus rau kaw tag nrho lub spool lub kaum sab xis 90 °, nruab nrog AT piston pneumatic actuator tuaj yeem siv rau kev txiav sai. Tom qab kev teeb tsa lub valve hluav taws xob positioner, nws tuaj yeem hloov kho raws li lub teeb liab analog 4-20Ma piv.
4. kev ua haujlwm thaiv zoo. Lub spool siv 1/4 hemispherical duab nrog lub rooj zaum ib sab. Thaum muaj cov khoom khov kho hauv nruab nrab, qhov thaiv qhov yuav tsis tshwm sim zoo li lub pob O-hom ib txwm muaj. Tsis muaj qhov sib txawv ntawm lub pob V-puab thiab lub rooj zaum, uas muaj lub zog loj shear, tshwj xeeb tshaj yog haum rau kev tswj hwm kev ncua thiab cov khoom khov kho uas muaj fiber lossis cov khoom khov kho me me. Tsis tas li ntawd, muaj V-puab pob valve nrog lub spool thoob ntiaj teb, uas haum rau cov xwm txheej siab thiab tuaj yeem txo qhov deformation ntawm lub pob core thaum qhov sib txawv siab siab ua. Nws siv ib lub rooj zaum sealing lossis ob lub rooj zaum sealing qauv. Lub pob V-puab pob valve nrog ob lub rooj zaum foob feem ntau yog siv rau kev tswj hwm qhov nruab nrab huv si, thiab cov khoom nruab nrab nrog cov khoom me me tuaj yeem ua rau muaj kev phom sij ntawm kev txhaws qhov nruab nrab.
5. Lub pob valve V-hom yog lub pob ruaj khov, lub rooj zaum muaj lub caij nplooj ntoos hlav, thiab nws tuaj yeem txav mus raws txoj kev ntws. Nws tuaj yeem them rov qab qhov hnav ntawm lub spool, ua kom lub neej ua haujlwm ntev dua. Lub caij nplooj ntoos hlav muaj lub caij nplooj ntoos hlav hexagonal, lub caij nplooj ntoos hlav nthwv dej, lub caij nplooj ntoos hlav disc, lub caij nplooj ntoos hlav compression cylindrical thiab lwm yam. Thaum cov khoom nruab nrab muaj cov khoom tsis huv me me, nws yog qhov tsim nyog ntxiv cov nplhaib kaw rau lub caij nplooj ntoos hlav kom tiv thaiv nws ntawm cov khoom tsis huv. Rau ob lub rooj zaum kaw lub ntiaj teb V-pob valves, cov qauv pob ntab yog siv.
6. Thaum muaj hluav taws thiab tiv thaiv kev xav tau, lub plawv valve yog ua los ntawm cov hlau tawv foob qauv, lub filler yog ua los ntawm graphite yooj ywm thiab lwm yam khoom siv kub siab, thiab lub qia valve muaj lub xub pwg sealing. Siv cov kev ntsuas electrostatic conduction ntawm lub cev valve, qia thiab lub pob. Ua raws li GB / T26479 hluav taws-resistant qauv thiab GB / T12237 antistatic xav tau.
7. Lub pob valve zoo li tus V raws li cov qauv sib txawv ntawm lub pob core, muaj cov qauv xoom eccentric, ib qho qauv eccentric, ob qho qauv eccentric, thiab peb qho qauv eccentric. Cov qauv siv feem ntau yog xoom eccentric. Cov qauv eccentric tuaj yeem tso lub spool tawm ntawm lub rooj zaum thaum nws qhib, txo qhov hnav ntawm lub nplhaib foob thiab txuas lub neej kev pabcuam. Thaum kaw, lub zog eccentric tuaj yeem tsim los txhim kho cov nyhuv sealing.
8. Hom kev tsav tsheb ntawm V-hom pob valve muaj hom kov, kab mob iav kis tau tus mob, pneumatic, hluav taws xob, hydraulic, electro-hydraulic linkage thiab lwm hom kev tsav tsheb.
9. V-hom pob valve kev sib txuas muaj flange kev sib txuas thiab clamp kev sib txuas ob txoj kev, rau lub ntiaj teb spool, ob lub rooj zaum sealing qauv thiab xov kev sib txuas thiab qhov (socket welding), taub qab vuam thiab lwm txoj kev sib txuas.
10. Lub pob valve ceramic kuj muaj lub pob V-puab zoo li tus qauv. Zoo hnav tsis kam, tab sis kuj tiv taus acid thiab alkali corrosion, zoo dua rau kev tswj cov khoom siv granular. Lub pob valve uas muaj fluorine kuj muaj lub pob V-puab zoo li tus qauv, uas yog siv rau kev tswj thiab tswj cov kua qaub thiab alkali corrosive media. Qhov ntau thiab tsawg ntawm V-hom pob valve siv tau ntau dua thiab ntau dua.
✧ Kev Pab Tom Qab Muag Khoom
Qhov kev pabcuam tom qab muag ntawm SDV valve (Shut Down Valve) (V port) yog qhov tseem ceeb heev, vim tias tsuas yog kev pabcuam tom qab muag raws sijhawm thiab zoo tuaj yeem ua kom nws ua haujlwm tau ntev thiab ruaj khov. Cov hauv qab no yog cov ntsiab lus kev pabcuam tom qab muag ntawm qee lub pob valve ntab:
1. Kev teeb tsa thiab kev ua haujlwm: Cov neeg ua haujlwm tom qab muag khoom yuav mus rau qhov chaw los teeb tsa thiab debug lub pob valve kom ntseeg tau tias nws ruaj khov thiab ua haujlwm ib txwm.
2. Kev Txij Nkawm: Tsis tu ncua tswj lub pob valve kom ntseeg tau tias nws nyob rau hauv qhov zoo tshaj plaws ua haujlwm thiab txo qhov ua tsis tiav.
3. Kev daws teeb meem: Yog tias lub pob valve floating tsis ua haujlwm, cov neeg ua haujlwm tom qab muag khoom yuav ua qhov teeb meem hauv qhov chaw sai tshaj plaws kom ntseeg tau tias nws ua haujlwm ib txwm.
4. Kev hloov kho tshiab thiab txhim kho khoom: Ua raws li cov ntaub ntawv tshiab thiab cov thev naus laus zis tshiab uas tshwm sim hauv kev ua lag luam, cov neeg ua haujlwm tom qab muag khoom yuav pom zoo kom hloov kho thiab txhim kho cov kev daws teeb meem rau cov neeg siv khoom kom muab cov khoom siv valve zoo dua rau lawv.
5. Kev cob qhia txog kev paub: Cov neeg ua haujlwm tom qab muag khoom yuav muab kev cob qhia txog kev paub txog lub valve rau cov neeg siv kom txhim kho qib kev tswj hwm thiab kev saib xyuas ntawm cov neeg siv siv cov pob valve ntab. Hauv ntej, kev pabcuam tom qab muag khoom ntawm lub pob valve ntab yuav tsum tau lees paub rau txhua qhov kev taw qhia. Tsuas yog txoj hauv kev no nws thiaj li coj cov neeg siv kev paub zoo dua thiab kev nyab xeeb yuav khoom.
